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Strengthening of Reinforced Concrete Continuous Beams in Flexure by Partial External Unbonded Tendons  

Yun, Hyun-Do (충남대학교 건축공학과)
Yang, Il-Seung (충남대학교 건축공학과)
Lim, Jea-Hyung (우송공업대학 건축공학과)
Moon, Jeong-Ho (한남대학교 건축공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.10, no.1, 2006 , pp. 165-172 More about this Journal
Abstract
A variety of techniques for strengthening have been developed, including pate bonding, external prestressing and overslabbing. Expecially, a strengthening technique for reinforced concrete beams using external unbonded reinforcement offers advantages in speed and simplicity of installation. The purpose of this paper is to investigate the capabilities of a new retrofitting technique, namely external prestressing(out-cable), for flexural strengthening of beams. Results of 2 physical tests (external Post-tension and out-cable system specimen) on strengthened reinforced concrete continuous beams are reported and compared. It is shown that the out-cable system can provide strength enhancement.
Keywords
Prestressing; Continuous Beam; Strengthening Technique; Out-cable System; Strength Enhancement;
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